Make OSX App Launcher Launchable from the Dock.

chrome/app/chrome_main_app_mode_mac.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // On Mac, one can't make shortcuts with command-line arguments. Instead, we
 // produce small app bundles which locate the Chromium framework and load it,
 // passing the appropriate data. This is the entry point into the framework for
 // those app bundles.
 
 #import <Cocoa/Cocoa.h>
@@ skipping 36 matching lines @@
 
  private:
   // IPC::Listener implemetation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void OnChannelError() OVERRIDE;
 
   // If Chrome failed to launch the app, |success| will be false and the app
   // shim process should die.
   void OnLaunchAppDone(bool success);
 
+  // Called when the Chrome process observes the app list dismissal.
+  void OnAppListDismissed();
+
   // Called when the app is activated, either by the user clicking on it in the
   // dock or by Cmd+Tabbing to it.
   void OnDidActivateApplication();
 
   // Quits the app shim process.
   void Quit();
 
   IPC::ChannelProxy* channel_;
 
   DISALLOW_COPY_AND_ASSIGN(AppShimController);
@@ skipping 13 matching lines @@
     Quit();
     return;
   }
 
   base::FilePath socket_path =
       user_data_dir.Append(app_mode::kAppShimSocketName);
   IPC::ChannelHandle handle(socket_path.value());
   channel_ = new IPC::ChannelProxy(handle, IPC::Channel::MODE_NAMED_CLIENT,
       this, g_io_thread->message_loop_proxy());
 
+  // Check if this ia a shim for showing the app list.
+  if (g_info->app_mode_id == app_mode::kAppListModeId) {
+    channel_->Send(new AppShimHostMsg_LaunchAppList());
+    return;
+  }
+
   channel_->Send(new AppShimHostMsg_LaunchApp(
       g_info->profile_dir.value(), g_info->app_mode_id));
 }
 
 bool AppShimController::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(AppShimController, message)
     IPC_MESSAGE_HANDLER(AppShimMsg_LaunchApp_Done, OnLaunchAppDone)
+    IPC_MESSAGE_HANDLER(AppShimMsg_AppListDismissed, OnAppListDismissed)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   return handled;
 }
 
 void AppShimController::OnChannelError() {
   LOG(ERROR) << "App shim channel error.";
   Quit();
 }
 
 void AppShimController::OnLaunchAppDone(bool success) {
   if (!success) {
     Quit();
     return;
   }
   [[[NSWorkspace sharedWorkspace] notificationCenter]
       addObserverForName:NSWorkspaceDidActivateApplicationNotification
                   object:nil
                    queue:nil
               usingBlock:^(NSNotification* notification) {
       NSRunningApplication* activated_app =
           [[notification userInfo] objectForKey:NSWorkspaceApplicationKey];
       if ([activated_app isEqual:[NSRunningApplication currentApplication]])
         OnDidActivateApplication();
   }];
 }
 
+void AppShimController::OnAppListDismissed() {
+  Quit();
+}
+
 void AppShimController::Quit() {
   [NSApp terminate:nil];
 }
 
 void AppShimController::OnDidActivateApplication() {
   channel_->Send(new AppShimHostMsg_FocusApp);
 }
 
 //-----------------------------------------------------------------------------
 
@@ skipping 162 matching lines @@
   // fully initialized don't receive a reply until its run loop starts. Once
   // the reply is received, Chrome will have opened its IPC port, guaranteed.
   [ReplyEventHandler pingProcess:psn andCall:base::Bind(&OnPingChromeReply)];
 
   MessageLoopForUI main_message_loop;
   main_message_loop.set_thread_name("MainThread");
   base::PlatformThread::SetName("CrAppShimMain");
   main_message_loop.Run();
   return 0;
 }